Steam will detect the missing file and download a fresh, uncorrupted version. Troubleshooting Steps
If the above solutions do not work, you can try more advanced troubleshooting steps:
Right-click Rise of the Tomb Raider → Properties → Installed Files → Verify integrity of game files . This redownloads missing or corrupt .tiger files. rise of the tomb raider unable to open bigfile000 top
The error message "Unable to open Bigfile000.top" flashed on the screen, and Lara was stumped. She tried to access the file from different angles, but it seemed to be encrypted or corrupted in some way. Lara's mind began to wander; she thought about all the possible solutions she could try. She remembered a similar problem she had encountered during her adventures in the jungle, where she had to use her knowledge of ancient languages to decipher a cryptic message.
This public link is valid for 7 days and shares a thread, including any personal information you added. This link or copies made by others cannot be deleted. If you share with third parties, their policies apply. Can’t copy the link right now. Try again later. Rise of the Tomb Raider – How to Fix All Errors Steam will detect the missing file and download
Open the Windows Start menu, type , and press Enter. Navigate to Virus & threat protection →right arrow Virus & threat protection settings →right arrow Manage settings .
The “Unable to open BIGFILE.000 / BIGFILE.000.tiger” error in Rise of the Tomb Raider can be frustrating, but it is rarely a sign of permanent damage to your game or your system. In over 90% of cases, verifying game integrity or adjusting permissions resolves the issue immediately. The error message "Unable to open Bigfile000
This error typically appears when the game cannot access or load its large packed data files (bigfile000 and similar). Causes: corrupted game files, missing or blocked files (permissions/antivirus), interrupted installation/update, issues with the platform client (Steam/EGS), or problems with mods/cracked copies. The fix sequence below goes from safest/simple to more involved.
If modifying file security does not fix the startup crash, system-level configurations might be choking the storage interface.
The artifact, it turned out, was a crucial piece of evidence that would change the course of history. Lara's discovery would go on to rewrite the books on ancient civilizations, and her name would become synonymous with archaeological excellence.
Allow the system to repair underlying file system structures, then restart the PC.